Leder T, Kühnel C, Gröber S, Drescher R, Freesmeyer M. 68 Ga-Oxine-Labeled Erythrocytes as a New PET Tracer for the Localization of Gastrointestinal Bleeding.
Clin Nucl Med 2024;
49:280-282. [PMID:
38109049 DOI:
10.1097/rlu.0000000000005021]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
ABSTRACT
A 69-year-old man presented with recurring drops in hemoglobin levels and suspected gastrointestinal bleeding. Endoscopy did not show a site of bleeding so further examinations became necessary. Scintigraphy and SPECT/CT with 99m TcO 4- -labeled red blood cells were performed without evidence of a hemorrhage. Based on an established protocol for splenic PET/CT, autologous erythrocytes can be labeled with 68 Ga-oxine and used as a tracer for the localization of active bleeding sites. In the patient, PET/CT with 68 Ga-oxine-labeled undamaged erythrocytes was performed successfully and revealed a hemorrhage of the gastric corpus that was confirmed and treated by endoscopy.
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